Ubuntu Security Notice 2634-1 – Wen Xu discovered a use-after-free flaw in the Linux kernel’s ipv4 ping support. A local user could exploit this flaw to cause a denial of service (system crash) or gain administrative privileges on the system. A memory corruption flaw was discovered in the Linux kernel’s scsi subsystem. A local attacker could potentially exploit this flaw to cause a denial of service (system crash). Various other issues were also addressed.